This master thesis describes the process of developing a web application for real estate advertising, named NewHome. The thesis begins with analyzing already existing solutions on the market and describes their features. The next part of the thesis specifies functional and non-functional requirements of the Newhome application. The data model is first represented by a conceptual and then a relational diagram.. For a relational diagram, each entity and its attributes are explained in detail. The next section of the thesis shows the high-level system architecture, and then describes the individual parts of the system, such as the web server and the web client, in more detail. Finally, the user interface is presented and the functionality offered by the application is described from a user perspective. The developed application allows users to publish their own real estate, where users can define their own properties on real estate. The application implements multi-criteria search to make the search process easier for users. The app implements a user rating system so users can check if the other person is trustworthy. In addition to rating, the app offers chatting between users. Users can also enable notifications that will be delivered to them even when the app is not running.